Mass and total decay rate of unstable particles in quantum field theory

1970 ◽  
Vol 3 (2) ◽  
pp. 153-164
Author(s):  
Michael Ram
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Decay Rate ◽  
Quantum Field ◽  
Total Decay Rate ◽  
Unstable Particles

scholarly journals Quantum Field Theory of Unstable Particles

1957 ◽  
Vol 18 (1) ◽  
pp. 101b-101b ◽  
Author(s):  
Huzihiro Araki ◽  
Yasuo Munakata ◽  
Masaaki Kawaguchi ◽  
Tetsuo Gotô
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Field ◽  
Unstable Particles

scholarly journals FIELD THEORY APPROACH TO $K^0-\overline{K^0}$ AND $B^0-\overline{B^0}$ SYSTEMS

1998 ◽  
Vol 13 (20) ◽  
pp. 3587-3600 ◽  
Author(s):  
M. BEUTHE ◽  
J. PESTIEAU ◽  
G. LÓPEZ CASTRO
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Cp Violation ◽  
Time Evolution ◽  
Theory Approach ◽  
Quantum Field ◽  
Unstable Particles ◽  
Mixed Systems

Quantum field theory provides a consistent framework to deal with unstable particles. We present here an approach based on field theory to describe the production and decay of unstable [Formula: see text] and [Formula: see text] mixed systems. The formalism is applied to compute the time evolution amplitudes of K0 and [Formula: see text] studied in DAPHNE and CPLEAR experiments. We also introduce a new set of parameters that describe CP violation in K→ππ decays without recourse to isospin decomposition of the decay amplitudes.

scholarly journals False vacuum decay in quantum mechanics and four dimensional scalar field theory

2018 ◽  
Vol 177 ◽  
pp. 09001 ◽  
Author(s):  
Maxim Bezuglov
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Mechanics ◽  
Green Function ◽  
Decay Rate ◽  
Radiative Corrections ◽  
Thin Wall ◽  
Quantum Field ◽  
False Vacuum ◽  
Vacuum Decay

When the Higgs boson was discovered in 2012 it was realized that electroweak vacuum may suffer a possible metastability on the Planck scale and can eventually decay. To understand this problem it is important to have reliable predictions for the vacuum decay rate within the framework of quantum field theory. For now, it can only be done at one loop level, which is apparently is not enough. The aim of this work is to develop a technique for the calculation of two and higher order radiative corrections to the false vacuum decay rate in the framework of four dimensional scalar quantum field theory and then apply it to the case of the Standard Model. To achieve this goal, we first start from the case of d=1 dimensional QFT i.e. quantum mechanics. We show that for some potentials two and three loop corrections can be very important and must be taken into account. Next, we use quantum mechanical example as a template for the general d=4 dimensional theory. In it we are concentrating on the calculations of bounce solution and corresponding Green function in so called thin wall approximation. The obtained Green function is then used as a main ingredient for the calculation of two loop radiative corrections to the false vacuum decay rate.

scholarly journals Precision decay rate calculations in quantum field theory

2017 ◽  
Vol 95 (8) ◽  
Author(s):  
Anders Andreassen ◽  
David Farhi ◽  
William Frost ◽  
Matthew D. Schwartz
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Decay Rate ◽  
Quantum Field

scholarly journals Quantum Field Theory of Unstable Particles

1957 ◽  
Vol 17 (3) ◽  
pp. 419-442 ◽  
Author(s):  
Huzihiro Araki ◽  
Yasuo Munakata ◽  
Masaaki Kawaguchi ◽  
Tetsuo Gotô
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Field ◽  
Unstable Particles
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